Power tracking control device and method for mobile equipment wireless power supply system

Abstract

The invention discloses a power tracking control device and a power tracking control method for a mobile equipment wireless power supply system. A frequency-power adjustable power supply supplies power to a transmitting device, a receiving device and the transmitting device are subjected to resonant coupling and transmit received electric energy to a load line, and then a stabilized voltage direct current is output by a rectifying and voltage stabilizing system to supply power to mobile equipment; when power is supplied, a power tracking controller detects an input voltage of the rectifying and voltage stabilizing system and sends a signal to regulate a power or a frequency of the frequency-power adjustable power supply; and simultaneously, the power tracking controller detects an output voltage of the rectifying and voltage stabilizing system and sends a signal to regulate a duty cycle of switching of a DC / DC (Direct Current to Direct Current) converter in the rectifying and voltage stabilizing system. The problem of power attenuation caused by resonant frequency drift in the working process of the wireless power supply system is solved; and the mobile equipment is guaranteed to normally work.

Description

technical field [0001] The invention relates to the technical fields of automation control and power electronics, in particular to a power tracking control of a mobile device wireless power supply system. Background technique [0002] At present, the power supply methods of various portable mobile devices such as mobile phones, PADs, game consoles, and small mobile TVs at home mainly rely on the battery plus charger mode. Due to the limited capacity of the battery, mobile devices need to be charged regularly or continue to work directly with a power adapter. Both the charger and the power adapter need to be connected with the mobile device by means of a cable and a socket, which causes a lot of inconvenience to the user. [0003] In recent years, with the development of wireless power transmission technology, wireless power supply devices for mobile devices have appeared on the market. Most of these devices use the principle of electromagnetic induction for power transmissi...

AI Technical Summary

Problems solved by technology

However, due to the diversity of loads, changes in the surrounding temperature environment, and product position shifts during the working process of this wireless power supply system, the resonant frequency of the system will drift, and the phenomenon of transmission power attenuation will occur, which will affect the normal operation of the equipment.

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